Migraine (hemicephalalgia) - pains in one half of the head, accompanied a vomiting.

Pathogenesis. Complex biochemical shifts, in particular augmentation in Serum of a blood of a serotonin and Prostaglandinums, provoke a short-term spastic stricture of intracranial vessels after which the long arteriectasia follows. The spastic stricture underlies photopsias and other focal signs, and the vasodilatation is an immediate cause of a headache. The essential role is played with an allergy and hereditary factors.

Signs, current. At a classical migraine the attack begins with the passing scotoma sometimes flickering. After the aura continuing from several minutes before half an hour, there is a unilateral headache in frontotemporal area; quite often the pain extends on all half of head. The pain is accompanied usually with a nausea and a vomiting. The attack lasts some hours. Unlike a classical migraine (a component of only 10 % of cases of pains from a migraine) the ordinary migraine has no visual aura. The pain arises in the morning, has diffusive character and some days last. Rest provokes a cephalalgia (a headache of a weekend). This variant of a migraine is more often observed at women with superfluous mass of a body. Frequency and gravity of attacks of a headache widely vary: at half of patients attacks arise less often than an once in a week. The migraine-widespread disease, her suffers 5-10 % of a population. Illness usually begins at youthful age, less often - in children's.